Most Recent Bulletin Report: November 1993 (BGVN 18:11)

Active fumaroles, some issuing from a hole in the snow-and-ice cap

Aerial observations on 21 September 1993 provided a clearer overview of fumarole locations. The aerial observations took place at noon and 1700 and included photo and video records. Two main vent areas were recognized and described. One vent area lies at the S side of the upper ridge segment, and covers an approximate area of 0.05-0.2 km2. This area resembled the flanks of a dome and emitted yellow-colored steam. The other vent area lies ~2 km to the NNE of the previously described one, and exits through a 100-m-wide perforation through Yanteles snow-and-ice cap. This vent area emitted a roughly 100-m high, white-to-yellow plume. Neither this vent area nor any other site in vicinity of the ridge has the morphology of a crater.

Information Contacts:J. Naranjo, SERNAGEOMIN, Santiago.

The Global Volcanism Program has no Weekly Reports available for Yanteles.

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11/1993 (BGVN 18:11)Active fumaroles, some issuing from a hole in the snow-and-ice cap

Aerial observations on 21 September 1993 provided a clearer overview of fumarole locations. The aerial observations took place at noon and 1700 and included photo and video records. Two main vent areas were recognized and described. One vent area lies at the S side of the upper ridge segment, and covers an approximate area of 0.05-0.2 km2. This area resembled the flanks of a dome and emitted yellow-colored steam. The other vent area lies ~2 km to the NNE of the previously described one, and exits through a 100-m-wide perforation through Yanteles snow-and-ice cap. This vent area emitted a roughly 100-m high, white-to-yellow plume. Neither this vent area nor any other site in vicinity of the ridge has the morphology of a crater.

Little-known Yanteles volcano in southern Chile is composed of five glacier-capped peaks along an 8-km-long NE-trending ridge. Several Holocene tephra layers have been documented, but historical activity from this 2042-m-high, andesitic volcanic complex is uncertain. Although there were reports of an eruption at the time of the 20 February 1835 Chile earthquake, and Sapper (1917) reported that previously unseen black areas were seen near the crater after the 1835 earthquake, the nature of this activity is not clear.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Synonyms

Yantales

The elongated, glacier-covered massif near the center of this NASA International Space Station image (with north to the left) is Yanteles volcano in southern Chile. The volcano is composed of five glacier-capped peaks along an 8-km-long NE-trending ridge. Historical eruptions from this 2042-m-high, andesitic volcanic complex are uncertain.

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).